My 2.5 year old has been talking very well for about a year now. He can talk in full sentences and hold a conversation. However, in the past week or two he has started to stammer quite severely - only really on the 'w' sound. He can take around 8 times of saying 'w' before he continues his sentence. This is happening every time he starts a sentence with 'w' and is starting to happen with other sounds too.
Is this just a phase of development? I wouldn't be concerned if he was just learning to talk but he has been able to speak for such a long time it seems odd to suddenly start doing this.
Thanks